EP 1341649 A4 20080618 - METHOD FOR CONTROLLING THERMOHYSTERESIS DURING THERMOFORMING OF THREE-DIMENSIONAL FIBROUS COMPOUN CONSTRUCTS AND THE PRODUCTS THEREOF
Title (en)
METHOD FOR CONTROLLING THERMOHYSTERESIS DURING THERMOFORMING OF THREE-DIMENSIONAL FIBROUS COMPOUN CONSTRUCTS AND THE PRODUCTS THEREOF
Title (de)
VERFAHREN ZUR STEUERUNG VON THERMOHYSTERESE BEIM WÄRMEFORMEN VON DREIDIMENSIONALEN FASERMASSENKONSTRUKTIONEN UND DIE PRODUKTE DARAUS
Title (fr)
PROCEDE DE COMMANDE DE L'HYSTERESIS THERMIQUE PENDANT LE THERMOFORMAGE DE CONSTRUCTIONS DE COMPOSES FIBREUX TRIDIMENSIONNELS ET PRODUITS AINSI OBTENUS
Publication
Application
Priority
- US 0149031 W 20011213
- US 25553100 P 20001213
Abstract (en)
[origin: WO0247877A1] A method is disclosed of controlling the thermohysteresis of a homogenous or layered fibrous pr-form, comprised at least in part of thermoplastic staple length fibers, such that the physical properties of the resulting molded three-dimensional compound construct are significantly enhanced. In particular, the thermohysteresis is the result of a specific thermal history comprising the treatment of a fibrous pre-form with an elevated temperature incubation period followed by a cooling period. A so-treated fibrous pre-form can be subsequently molded b< conventional thermomolding methods to render improved toughness, strength and structural stability to a resulting molded construct.
IPC 1-7
IPC 8 full level
B27N 3/08 (2006.01); B27N 3/18 (2006.01); B27N 5/00 (2006.01); B29C 43/02 (2006.01); B60R 13/02 (2006.01); D04H 1/00 (2006.01); D04H 1/48 (2006.01); D04H 1/54 (2006.01); B29K 105/08 (2006.01)
CPC (source: EP US)
B27N 3/08 (2013.01 - EP US); B27N 3/18 (2013.01 - EP US); B27N 5/00 (2013.01 - EP US); D04H 1/485 (2013.01 - EP US); D04H 1/558 (2013.01 - EP US); Y10T 442/682 (2015.04 - EP US); Y10T 442/69 (2015.04 - EP US); Y10T 442/692 (2015.04 - EP US)
Citation (search report)
- [A] WO 8203359 A1 19821014 - DRESSER CORP [US]
- [A] WO 8805838 A1 19880811 - ALLIED CORP [US]
- [A] GB 1596025 A 19810819 - ICI LTD
- See references of WO 0247877A1
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 0247877 A1 20020620; AU 3102902 A 20020624; EP 1341649 A1 20030910; EP 1341649 A4 20080618; JP 2004515662 A 20040527; US 2002137421 A1 20020926
DOCDB simple family (application)
US 0149031 W 20011213; AU 3102902 A 20011213; EP 01991292 A 20011213; JP 2002549436 A 20011213; US 2192901 A 20011213